发明名称 |
Well treatment fluid placement tool and methods |
摘要 |
The present invention provides a tool and methods of placing a treatment fluid in a subterranean formation penetrated by a well bore by way of selected perforations extending from casing cemented in the well bore into the formation. The fluid placement tool includes a fluid flow passageway extending therethrough, at least one resilient self expandable cup type packer attached thereto and a valve disposed in the fluid flow passageway which closes the passageway when a closing plug is dropped into the tool. The placement tool is capable of releasing the cup type packer whereby it provides a seal between the tool and the casing when a first predetermined fluid pressure is applied to the tool after a closing plug is dropped therein and opening the fluid flow passageway whereby the treatment fluid is discharged from the tool below the packer when the fluid pressure is increased to a second predetermined fluid pressure. Methods of using the tool are also provided.
|
申请公布号 |
US5803177(A) |
申请公布日期 |
1998.09.08 |
申请号 |
US19960760095 |
申请日期 |
1996.12.11 |
申请人 |
HALLIBURTON ENERGY SERVICES |
发明人 |
HRISCU, IOSIF J.;WINSLOW, DONALD W. |
分类号 |
E21B33/126;E21B33/138;E21B34/14;E21B43/04;(IPC1-7):E21B23/06;E21B34/08;E21B43/12 |
主分类号 |
E21B33/126 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|